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Sega Ages 2500 Series Vol. 29: Monster World Complete Collection (SEGA AGES 2500シリーズ Vol.29 モンスターワールド コンプリートコレクション) is the 29th entry in the Sega Ages 2500 series for the PlayStation 2.

Monster World Complete Collection is a compilation featuring a selection of Wonder Boy games, namely those released on Sega platforms. Though there are only six games in the series, various ports are included, bringing the total number of games to 12. Also included are artwork galleries, instruction manuals and Japanese/overseas variants (bar the English version of Wonder Boy in Monster Land).

Interestingly, the Sega Master System version of Wonder Boy III: The Dragon's Trap is included in this collection, despite never being released in Japan. The game nevertheless supports the FM Sound Unit add-on, meaning this is the first time the general public could hear this game with its FM soundtrack (without resorting to emulation).